Description:
------------
I've downloaded latest source snapshot and I've tried to compile it using cygwin.
It fails because it doesn't find the libxml. I think that ./configure should generate an error if the libxml isn't found.

Actual result:
--------------
$ make
gcc  -Iext/libxml/ -I/home/Nuno/php5/ext/libxml/ -DPHP_ATOM_INC -I/home/Nuno/php
5/include -I/home/Nuno/php5/main -I/home/Nuno/php5 -I/home/Nuno/php5/Zend -I/usr
/include/libxml2  -I/home/Nuno/php5/TSRM  -g -Wall  -c /home/Nuno/php5/ext/libxm
l/libxml.c -o ext/libxml/libxml.o  && echo > ext/libxml/libxml.lo
In file included from /usr/include/libxml2/libxml/parser.h:655,
                 from /home/Nuno/php5/ext/libxml/libxml.c:38:
/usr/include/libxml2/libxml/encoding.h:27:19: iconv.h: No such file or directory

In file included from /usr/include/libxml2/libxml/parser.h:655,
                 from /home/Nuno/php5/ext/libxml/libxml.c:38:
/usr/include/libxml2/libxml/encoding.h:132: error: syntax error before "iconv_t"

/usr/include/libxml2/libxml/encoding.h:132: warning: no semicolon at end of stru
ct or union
/usr/include/libxml2/libxml/encoding.h:133: warning: type defaults to `int' in d
eclaration of `iconv_out'
/usr/include/libxml2/libxml/encoding.h:133: warning: data definition has no type
 or storage class
make: *** [ext/libxml/libxml.lo] Error 1